关键词: 天然橡胶, 干燥, 气流, 均匀性, 模拟

Abstract: This paper established the different working states，different thickness and different channel of natural rubber drying models，and simulated the flow conditions of the gas using Fluent software. According to the surface pressure difference of the natural rubber and the vertical speed distribution of the center plane，the corresponding models of air distribution uniformity were analyzed. The results showed that in the rectangle runner model，the surface pressure difference along the flow direction increased gradually，resulting in an uneven distribution of the flow through the rubber layer. With greater gas flow and longer drying time，the air distribution uniformity became more obvious. In the trapezoidal runner model，the fluid distribution was basically consistent with different layer thickness，With the maximum slope gradient，the flow uniformity reached the best condition. At certain drying state，if the two paragraphs cants of combination model were placed reasonably，the airflow uniformity could be further improved. The overall airflow distribution uniformity was better in the trapezoidal model.

Key words: natural rubber, dry, airflow, uniformity, simulation